# SDR TRAX200800124

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2008
- Submitted: January 25, 2008
- Operation: Air carrier
- Aircraft: N972EV
- Make and model: Cndair CL6002B19
- Aircraft serial: 7534
- Aircraft time: 15,674 hours, 12,925 cycles
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Selector Knob
- Condition: Broken
- Location: Stby Altimeter
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRAX200800124

## Discrepancy

DURING CLIMB THRU FL 180 THE STBY ALTIMETER SELECT KNOB BROKE, KNOB WILL ONLY ROTATE COUNTER CLOCKWISE.  EMERGENCY DECLARED.  A/C RETURNED TO ATL AFTER T/O.

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